[Bug c/106016] New: [PowerPC] crash with attempt to initialize array of MMA accumulators

["nemanja.i.ibm at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106016

            Bug ID: 106016
           Summary: [PowerPC] crash with attempt to initialize array of
                    MMA accumulators
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: nemanja.i.ibm at gmail dot com
  Target Milestone: ---

Code:
$ cat aa.c 
void array_crash(__vector_quad *a, __vector_quad *b) {
  __vector_quad arr[2] = {*a, *b}; // Should not crash
}

Compile:
$ /opt/gcc-nightly/12/bin/gcc -mcpu=power10 -O3 aa.c -S
aa.c: In function 'array_crash':
aa.c:2:17: internal compiler error: in count_type_elements, at expr.cc:6407
    2 |   __vector_quad arr[2] = {*a, *b}; // Should not crash
      |                 ^~~
0x105583df count_type_elements
        /home/gccbuild/gcc_12_git/gcc/gcc/expr.cc:6407
0x1055cd3b categorize_ctor_elements_1
        /home/gccbuild/gcc_12_git/gcc/gcc/expr.cc:6519
0x10646293 gimplify_init_constructor
        /home/gccbuild/gcc_12_git/gcc/gcc/gimplify.cc:5179
0x10647643 gimplify_modify_expr
        /home/gccbuild/gcc_12_git/gcc/gcc/gimplify.cc:6040
0x10639d93 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /home/gccbuild/gcc_12_git/gcc/gcc/gimplify.cc:15098
0x10643fd3 gimplify_stmt(tree_node**, gimple**)
        /home/gccbuild/gcc_12_git/gcc/gcc/gimplify.cc:7151
0x10643fd3 gimplify_and_add(tree_node*, gimple**)
        /home/gccbuild/gcc_12_git/gcc/gcc/gimplify.cc:496
0x10643fd3 gimplify_decl_expr
        /home/gccbuild/gcc_12_git/gcc/gcc/gimplify.cc:1936
0x1063ad0b gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /home/gccbuild/gcc_12_git/gcc/gcc/gimplify.cc:15295
0x10642b6f gimplify_stmt(tree_node**, gimple**)
        /home/gccbuild/gcc_12_git/gcc/gcc/gimplify.cc:7151
0x10642b6f gimplify_bind_expr
        /home/gccbuild/gcc_12_git/gcc/gcc/gimplify.cc:1428
0x1063a79b gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /home/gccbuild/gcc_12_git/gcc/gcc/gimplify.cc:15299
0x1063e3d7 gimplify_stmt(tree_node**, gimple**)
        /home/gccbuild/gcc_12_git/gcc/gcc/gimplify.cc:7151
0x1063e3d7 gimplify_body(tree_node*, bool)
        /home/gccbuild/gcc_12_git/gcc/gcc/gimplify.cc:16355
0x1063e83b gimplify_function_tree(tree_node*)
        /home/gccbuild/gcc_12_git/gcc/gcc/gimplify.cc:16509
0x1044cab7 cgraph_node::analyze()
        /home/gccbuild/gcc_12_git/gcc/gcc/cgraphunit.cc:676
0x1044fbf7 analyze_functions
        /home/gccbuild/gcc_12_git/gcc/gcc/cgraphunit.cc:1241
0x10450893 symbol_table::finalize_compilation_unit()
        /home/gccbuild/gcc_12_git/gcc/gcc/cgraphunit.cc:2501
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

Version:
$ /opt/gcc-nightly/12/bin/gcc --version
gcc (GCC) 12.1.1 20220524 [releases/gcc-12 r12-8410-gf0a0aeec44]
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